Well, wrestling has never been all that "fun" for the egos in the back. It's dog eat dog, back there. He's definitely a drama queen, though. He's a bit like Bret Hart in that regard, in that he thinks everything revolves around him. He has a much shorter fuse, though, it seems.
That all said, the WWE would take him back in a heartbeat, if he's allowed to negotiate with other companies. He's worth a year's worth of merch and PPV matches, at the least. It would probably raise his profile quite a bit as well. AEW has done okay, but nothing beats being a star in the WWE.